Affordable Access

Publisher Website

Magnetic cellulose fibres and paper: preparation, processing and properties

Authors
Journal
Polymer
0032-3861
Publisher
Elsevier
Publication Date
Volume
33
Issue
19
Identifiers
DOI: 10.1016/0032-3861(92)90600-2
Keywords
  • Lumen-Loading
  • Magnetic Fibres
  • Ferrites
  • Conductometry
  • Cellulose
  • Carboxymethyl Cellulose
  • Superparamagnetism
Disciplines
  • Chemistry

Abstract

Abstract Magnetic cellulose fibres can be prepared either by ‘lumen loading’ or by in situ synthesis of ferrites. By using the lumen-loading technology, commercially available magnetic pigments can be introduced into the lumens of softwood fibres from which magnetic paper may be prepared. Lumen-loaded fibres act as magnetic dipoles allowing manipulation of fibre orientation in papermaking. In situ synthesis of iron oxide particles is performed through oxidation of ferrous hydroxide precipitated with caustic from the ferrous ion-exchanged form of sodium carboxymethyl cellulose fibres. The latter are characterized by conductometric titration to determine the number of functional groups available for the in situ chemistry. Superparamagnetically responsive fibres have smaller and less-coloured pigments which are only magnetic in the presence of a field.

There are no comments yet on this publication. Be the first to share your thoughts.